i added an attachment with both pang de and xu chu after reforging bolus is used on them. look at the strength of each hero and then the corresponding attack. for jus 5 extra strength xu chu is 15 attack weaker than pang de.

In most servers the number 1 hero are by far far Pang De and not Xu Chu. This to me is the best sign for which is stronger. Also when you look at the raw stats in basic form Pang De has higher attack score. It is the attack score that is most important in duels not strength stats. Strength stats are important in battles where is contributes to the army's bonus but in duels attack score is what counts. If anyone disagrees plz let me know